In a new study, researchers demonstrated that changes in refractive index, a measure of how fast light travels through a material, could be observed when a piece of metal coated with a ceramic thermal barrier coating was pulled in a controlled manner.

In a new study, researchers demonstrated that changes in refractive index, a measure of how fast light travels through a material, could be observed when a piece of metal coated with a ceramic thermal barrier coating was pulled in a controlled manner.